Category:Telephony

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Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large. It should directly contain very few, if any, pages and should mainly contain subcategories.

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Subcategories

This category has the following 3 subcategories, out of 3 total.

D

► Directories‎ (2 C, 4 P)

N

► Telephone numbers‎ (3 P)

S

► Secure communication‎ (2 C, 2 P)

Pages in category "Telephony"

The following 5 pages are in this category, out of 5 total.

A

Answering machine

B

Blue box

C

D

Duplex (telecommunications)

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